1) go to wiitdb.com and look for your game, you find the game ID clise to the ID field on the game page. GameIS composed with 6 AlphaNum "letters". I think that 4 are for the game "name" and 2 for the Game Manufacturer, but I'm not sore about that. Simply rename your wahtever.iso to R45eP8.iso (if R45eP8 is the ID you find on the game page :-) )
2) Or, easyest way IMHO: open your iso file with your best prefered hexeditor software. the 6 first letter you'll see on the top of the "translated" section are the gameID. rename your file and you're done!

Hope this help ...
Laurent
PS: some software like wibafu are able to automatically retrieve this gameid, I think ...

if you create the iso to wbfs with subdirectory it gives you the game id aswell as converting it to wbfs so dont need to go to wiitbd.com unless you want the game covers or get the covers through the loader if your connected to the internet with the wii

The original poster clearly did not use any type of management software to "obtain" his ISOs. If he had used wbfs manager, we would not be having this discussion because the file names with their corresponding IDs would all be in place. He was in the dark about how to name his existing ISOs(as was I when I first started) and that's where wiitdb.com can help.

yes but he is trying to get iso to work on the hdd when it needs to be wbfs and the way to get it to wbfs is use wii game manager or wii backup manager and that makes it have the game id makeing the wbfs with subdirectory

There is nothing in any of his posts that indicates his desire to convert his ISOs to wbfs format. You introduced this idea to him in your first post and I believe that confused the issue for him. The fact is the game files do not need to be in wbfs format. All of my games run fine in ISO format with a NTFS formatted HDD. The original poster had a very simple question about file naming conventions which had a very simple answer. Either way, thanks for replying.

on a fat32 or ntfs it has to be like this HDD/wbfs/RLIP64_LEGO Indiana Jones_ The Original Adventures/RLIP64.wbfs

I registered an account just to say THANK YOU VERRRRRY MUCH! I have been fooling around with this for hours on end...
I have had this WBFS file bouncing around not knowing where to put it.... now perfect!!!!! thanks again!

There is nothing in any of his posts that indicates his desire to convert his ISOs to wbfs format. You introduced this idea to him in your first post and I believe that confused the issue for him. The fact is the game files do not need to be in wbfs format. All of my games run fine in ISO format with a NTFS formatted HDD. The original poster had a very simple question about file naming conventions which had a very simple answer.

- how did you make that? Please, help me! I want to load Xenoblade Chronicles form my HDD in .iso format, not .wbfs - but USB loader GX can't see the iso. In wich folder i must put .iso file of the game? USB loader GX see only my wbfs files, but trouble is in Xenoblade Chronicles- it's freezes after i came into Colonia #9. It's because of 2-layered DVD-game. I need to run my ISO file - please, help me!